CA1315562C - Device for assembling fabric layers, particularly designed for manufacturing industry machines - Google Patents
Device for assembling fabric layers, particularly designed for manufacturing industry machinesInfo
- Publication number
- CA1315562C CA1315562C CA000601462A CA601462A CA1315562C CA 1315562 C CA1315562 C CA 1315562C CA 000601462 A CA000601462 A CA 000601462A CA 601462 A CA601462 A CA 601462A CA 1315562 C CA1315562 C CA 1315562C
- Authority
- CA
- Canada
- Prior art keywords
- principal elements
- needles
- principal
- fabric layers
- assembling
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H3/00—Separating articles from piles
- B65H3/22—Separating articles from piles by needles or the like engaging the articles
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sewing Machines And Sewing (AREA)
- Treatment Of Fiber Materials (AREA)
- Looms (AREA)
- Sheets, Magazines, And Separation Thereof (AREA)
Abstract
Abstract The present invention is directed to a device for assembling fabric layers having a simple construction.
The device comprises two plates connected to each other, one carrying a plurality of needles and the other having a series of corresponding holes; the two plates may be brought near to each other, so that the needles jut out from the holes to transfix the fabric layers, and may be removed so that the plate with the holes slips off the fabric layers from the needles. A locking mechanism is provided which locks, in an unlockable manner, the two plates in their approached position.
The device comprises two plates connected to each other, one carrying a plurality of needles and the other having a series of corresponding holes; the two plates may be brought near to each other, so that the needles jut out from the holes to transfix the fabric layers, and may be removed so that the plate with the holes slips off the fabric layers from the needles. A locking mechanism is provided which locks, in an unlockable manner, the two plates in their approached position.
Description
13155~2 DEVIOE FOR ASSEMBLING FABRIC IAYERS, PARTICUI.ARLY DESIt;NED
FOR MANUFACTURING INDUSTRY MACHINES
The present invention is directed to a device for assembling fabric layers, particularly designed for machines of the manufacturing industry.
In the manufacturing industry there is the necessity of assembling and overlapping fabric layers. In forming a collar or a cuf~ of a shirt, for example, three fabric layers are ~sed, which must be singly drawn and overlapped, in order to be transferred to the sewing unit and sewn together. For this purpose, grasp members may be used.
At present, such grasp members present a grasp head comprising a small wheel and a block opposed to the small wheel. To grasp the fabric layer, the small wheel and the block are moved into contact with each other and the small wheel is rotated to an appropriate rotation so that a fabric strip is grasped between the small wheel and the block.
To discharge the abric layer, the small wheel is rotated in the opposite direction to the previous rotation.
There may even be different grasp heads, formed for example by pick-up pliers. A drawback to this arrangement is due to the fact that to grasp fabric layers having a certain longitudinal extension, as in the formation of shirt collars, two grasp members are necessary.
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They o~erate at two opposite points on the layer, as one member alone would not retain the fabric in a planar configuration, as is necessary during the transfer and the release of the fabric layers on the sewing unit.
Further, such grasp members are complex to manufacture and replace. They are therefore expensive to use.
An object of the present invention is to provide an assembling device, capable of drawing and overlapping fabric layers, which is simple to manufacture and use and thus is inexpensive.
In one embodiment the present invention provides a device for assembling fabric layers, particularly designed for machines of the manufacturing industry, characterized in that it comprises two principal elements connected in such a way that they may freely move reciprocally between a removal position and an approach position, one of the principal elements carrying solidly a plurality of needles and the other having a plurality of holes corresponding with said needles, in the removal position said needles ~0 being gathered ln a space included between said two principal elements, in the approach position said needles fitting into said holes and jutting out of them, locking means being provided which lock, in an unlockable way, said principal elements in said approac~ position, during the passage from said removal position to said approach position said needles gradually jutting out of the corresponding holes to transfix said fabric layers, while during the passage from said approach position to the re~oval position the principal element provided with the holes slipping the fabric layers off of said needles.
Preferred embodiments of the present invention will be hereinafter described and illustrated in the drawings in which:
Fig. l s a perspective view of an assembling device according to the invention, 1315~;~h Fig. 2 is a partial side view according to the arrow L, partially in section, of the assembling device of Figure 1, Fig. 3 is a partial overhead view of the assembling device of Figure 1, Fig. 4 is a section taken along line IV-IV of Figure 3 of the device of Figure 1, Figs. 5, 6, 7 and 8 show, the first, according to an overhead view, and the other three, according to a side view, the method of operating the assembling device of 10 Figure 1.
Referring to Figs. 1, 2, 3 and 4 a device for assembling fabric layers, indicated by the numeral 38, comprises two principal elements formed by two parallel plates 45 and 46 connected to each other by two connecting 15 members 47.
Each connecting member comprises a bushing 48 in which a column 49, provided with a foot 50 and a head 51, is mounted, free to slide. The bushing 48 is fixed to the plate 45, while the foot 50 is fixed to the plate 46. The 20 connecting members 47 permit a relative approach and removal movement of the two plates 45 and 46 maintaining the parallelism between them. Around each bushing 48, between the two plates 45 and 46, a helicoidal spring is mounted, which acts at one side on a surface of the plate 25 45 and at the other side on the foot 50 so as to maintain the two plates 45 and 46 elastically spaced. The heads 51 are ~nd-stroke elements and maintain the two plates 45 and 46 in a determinate position of greatest reciprocal distance against the action of the spring 52.
On the plate 45 a plurality of needles 53 is fixed and, corresponding to said needles 53, on the plate 46 an equal number of holes 54 is made, through which the needles pass in pre-determined reciprocal positions of the two plates 45 and 46. On a folded edge of the plate 45 there 35 is mounted a bracket element 55 to which a hook 57 is pivoted at 56. The hook 57 is L-shaped and one of its arms 58 presents at its end a locking tooth 59, while the other arm 60 presents at its end a counterweight 61. On a folded edge of the plate 46 there is fixed a L-shaped referement element 62 which presents a notch 63 into which the locking tooth S9 is designed to fit.
The assembling device 38 comprises a rod 43 which permits its connection to a driving unit, not illustrated, and which is rotating around its longitudinal axis Z-Z.
To rotate the assembling device 38 around the Z-2 axis, the rod 43 ends in a anchorage foot 64 which couples, free to rotate, with a hollow element 65 fixed to the plate 45. An electric motor 66 is mounted on the foot 64 and transmits rotational motion to a screw 67 via a toothed belt 68 and two toothed wheels, one of them a driving wheel fixed to the motor shaft, the other, a driven wheel fixed to the screw 67. The screw 67 is mounted, free to rotate, on two abutments 70 fixed to the foot 64. On the screw 67 there is mounted a block 71 to which a nut is attached, coupling with the screw 67. The block 71 is provided with a tongue 9 which is placed, free to slide, in a slot 73 of an element 74 fixed to the foot 64. A
free end of a flexible blade 76 is fixed to an extension 75 of the block 71. The other end of the flexible blade 76 is fixed to the hollow element 65. In this way, one rotation of the screw 67, operated by the motor 66, corresponds to a displacement of the block 71 along the axis of the same screw, displacement which is guided by the slot 73. In turn the block 71 rotates the hollow element 65 through the blade 76. The fact that the junction 77 of the blade 76 to the extension 75 of the block 71 moves with rectilinear motion and the junction 78 of the blade 76 to the hollow element 65 moves with circular motion is compensated by the flexibility of the same blade which will bend more or less according to the position of the junction 77 with respect to the rotation center of the junction 78. By an appropriate supply of the electric motor 66 it is possible to cause the rotation 1 3~6~2 of the hollow element 65 relative to the anchorage foot 64, that is to cause the rotation of the whole assembling device 38 around the Z-Z axis, along which the rod 43 in place, in one or in the other of the two rotation ways, is indicated by the arrow F in Figure 1.
An angular position sensor of a known type, connected to the screw 67, is also fixed to the foot 64. Moreover there are provided two stroke-ends which stop the rotation of the assembling device 38 in two respective angular positions of this relative to the Z-Z axis, that is they limit the angular excursion of the assembly device 38, one stroke-end relative to one rotation way, the other relative to the other rotation way.
One of the two stroke-ends is~formed by a microswitch 80, fixed to the foot 64, which is controlled by a blade 81, fixed to the block 71, which acts on a small rod 82 of the microswitch 80 controlling the mobile contact of the same microswitch, which gives the command to stop the stroke.
The other stroke-end is formed by an electronic switch comprising a magnet 83, mounted on extension 84 of the anchorage foot 64, and a transistoric circuit 85 mounted on an extension 86 of the hollow element 65 in correspondence with the magnet 83. When the circuit 85 is aligned with the magnet 83, this determines a communication in the same circuit which gives the command to stop the stroke.
In Figs. 5, 6, 7 and 8 the method of operating the assembly device 38 is shown with particular reference to the utilization of this device to assemble three fabric layers resting, in a separated position one from another, on a support plane 32. In Figure 5, as well as in Figure 1 there is partially illustrated an arm 37, formed by two half-arms 37A and 37B, of the above cited driving unit which supports the assembling device 38.
The assembling device 38 is in raised position with respect to the support plane 32. The driving unit moves 131~2 the arm 37 to carry the assembling device 38 to a correct position above the lower fabric layer 20 (Fig. 5); then, acting on the ~od 43, controls the descent of the assembling device 38 towards the support plane 32.
Before the assembling device 38 is lowered by the driving unit to assemble the first fabric layer 20, it is in the configu- ration of Figure 6, in which the two plates 45 and 46 are elastically held by the spring 52 in a position in which the needles 53 are completely inside the space delimited by the same plates and in whicn the tooth 59 of the hook 57 is held by the counterweight 61 against a wall 106 of the element 62. When the lower plate 46 enters into contact with the support plane 32 and with the first fabric layer 20, the further descent of the assembling device 38 causes the approach of the plate 45 to the plate 46 against the action of the spring 52 and, as a consequence, causes the partial passage of the needles 53 through the corresponding holes 54. In this way the needles transfix the fabric layer 20 partially entering into the support plane 32, as shown in Figure 2.
Subsequently the driving unit controls the raising of the assembling device 38 via the rod 43. During the raising, the action of the spring 52 tends to move the two plates 45 and 46 apart. Yet the tooth 59 of the hook 57 fits into the cavity 63 of the element 62, that is, the hook 57 clasps the element 62 fastening the two plates 45 and 46 in an approached position in which the needles jut out of the corresponding holes 54 keeping the fabric layer 20 transfixed, which is so raised with the assembling device 38, as shown in Figure 7.
In the following phase, the assembling device 38 is carried in the correct position above the central fabric layer 20 and is lowered and raised so that the needles 53 transfix and carry with them the second fabric layer. The hook 57 is always held by the counterweight 61 in locking position maintain the needles in the jutting out position.
The following phase describes the assembly of the third superior fabric layer 20, which occurs in a manner identical to that explained in the previous phase. The three fabric layers 20 result in this way transfixed by the needles 53 and laid one upon the other.
The support plane 32 provides a fibrous superior thickness 110, shown only in Figure 2, which permits a partial penetration of the needles 53 into the same plane during the assembling of the fabric layers 20 without creating friction forces which could obstruct the raising of the assembling device 38. At this moment the driving unit moves the assembling device 38 with the three laid upon fabric layers 20 transfixed by the needles 53, to carry it on a support base 87 to discharge the three laid upon fabric layers 20 on the same base. This support base may, for example, be part of a sewing unit where the three laid upon fabric layers 20 are sewn together. When the assembling device is in its correct position on the support base 87, the unlocking of the hook 57 of the element 62 is operated. That causes, as a result of the action of the spring 52, a sudden removal of the plate 46 from the plate 4~ to the greatest removal position so that the inferior plate 46 slips off the three laid upon fabric layers 20 from the needles 53 and pushes them towards the support base 87, where such fabric layers are stored, as shown in Figure 8. In said figure the unlocking movement of the hook 57 is schematized with an arrow "Hn. The assembling device returns in this way to the position shown in Fig. 6.
To unlock the hook 57, unlocking means associated with the same hook may be used. For example it may be a small hammer, mounted on the support base, schematically indicated by the numeral 90 in Fig. 3, which is driven by a pneumatic or electromagnetic actuator in such a way as to strike against the hook ~7 to unlock it from the element 62.
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It may even be a pneumatic or electromagnetic member directly mounted on the assembling device, as shown in Fig. 2, wnere this unlocking member, mounted on the plate 46, is illustrated in phantom lines and indicated by the numeral 8 and comprises an element 8A which operates as the small hammer.
Generally, the unlocking means may be of any type and may be mounted on the assembling device or on the structure which receives the three laid upon fabric layers.
The described and illustrated assembling device appears in its basic structure, that is, not considering the motor and the kinematic elements which permit its rotation around the Z-Z axis. It is very simply formed by a few elementary components. This results in very low production costs. Even the operating manner of this assembling device is very simple making the device very reliable.
Moreover it ma~ntains the fabric layers in a planar configuration during transport and discharge. It may, besides other functions, draw and layer a number of different fabric layers, as well as fabric layers of various form, size, thickness etc.
The members which permit the rotation of the assembling device around the Z-Z axis, permit a very fine rotational movement, due to the great reduction caused by the screw 67. This is important for setting the assembling device in the correct angular position above the fabric layer to be drawn. Often during the driving operation it is this angular regulation which is most important and often the known driving units are missing this angular regulation. It is especially necessary when the piece to be drawn has an oblong configuration. It is clear that variations and/or supplements may be provided to what has been described and illustrated.
For example the configuration of the plates, in respect to the form of the fabric layers, may be changed and even i 6 2 the type of connecting members may be changed.
As far as the rotation of the assembling device is concerned, this could be effected by directly rotating the same assembling device. That is to say, however, that the illustrated solution which comprises mounting a small electric motor and the corresponding kinematic elements on the assembling device for rotating the assembling device relative to one of its rods permitting its connection to the driving unit, relieves, as much as possible, the load supported by the driving unit.
Clearly, the kinematic elements above described and illustrated, which permit the electric motor to rotate the assembling device as regards to its connection rod, may be replaced by kinematic elements having equivalent functions.
The kinematic elements of the present invention however are particularly advantageous because they do not require an electric motor of any ~reat power to rotate the assembling head, due to the great reduction effected by the screw 67 and because, due to this reduction, permits fine regulation of the rotation of the assembling head. Instead of the counterweight 61, it is possible to use, to maintain the hook against the-corresponding element to which it couples, a spring schematically indicated in Fig. 2 in phantom lines by the numeral 7.
Such an assembling device, although particularly apt for assembling and layering fabric layers, may also assemble layers of other material which can be easily transfixed and slip off of the needles.
FOR MANUFACTURING INDUSTRY MACHINES
The present invention is directed to a device for assembling fabric layers, particularly designed for machines of the manufacturing industry.
In the manufacturing industry there is the necessity of assembling and overlapping fabric layers. In forming a collar or a cuf~ of a shirt, for example, three fabric layers are ~sed, which must be singly drawn and overlapped, in order to be transferred to the sewing unit and sewn together. For this purpose, grasp members may be used.
At present, such grasp members present a grasp head comprising a small wheel and a block opposed to the small wheel. To grasp the fabric layer, the small wheel and the block are moved into contact with each other and the small wheel is rotated to an appropriate rotation so that a fabric strip is grasped between the small wheel and the block.
To discharge the abric layer, the small wheel is rotated in the opposite direction to the previous rotation.
There may even be different grasp heads, formed for example by pick-up pliers. A drawback to this arrangement is due to the fact that to grasp fabric layers having a certain longitudinal extension, as in the formation of shirt collars, two grasp members are necessary.
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They o~erate at two opposite points on the layer, as one member alone would not retain the fabric in a planar configuration, as is necessary during the transfer and the release of the fabric layers on the sewing unit.
Further, such grasp members are complex to manufacture and replace. They are therefore expensive to use.
An object of the present invention is to provide an assembling device, capable of drawing and overlapping fabric layers, which is simple to manufacture and use and thus is inexpensive.
In one embodiment the present invention provides a device for assembling fabric layers, particularly designed for machines of the manufacturing industry, characterized in that it comprises two principal elements connected in such a way that they may freely move reciprocally between a removal position and an approach position, one of the principal elements carrying solidly a plurality of needles and the other having a plurality of holes corresponding with said needles, in the removal position said needles ~0 being gathered ln a space included between said two principal elements, in the approach position said needles fitting into said holes and jutting out of them, locking means being provided which lock, in an unlockable way, said principal elements in said approac~ position, during the passage from said removal position to said approach position said needles gradually jutting out of the corresponding holes to transfix said fabric layers, while during the passage from said approach position to the re~oval position the principal element provided with the holes slipping the fabric layers off of said needles.
Preferred embodiments of the present invention will be hereinafter described and illustrated in the drawings in which:
Fig. l s a perspective view of an assembling device according to the invention, 1315~;~h Fig. 2 is a partial side view according to the arrow L, partially in section, of the assembling device of Figure 1, Fig. 3 is a partial overhead view of the assembling device of Figure 1, Fig. 4 is a section taken along line IV-IV of Figure 3 of the device of Figure 1, Figs. 5, 6, 7 and 8 show, the first, according to an overhead view, and the other three, according to a side view, the method of operating the assembling device of 10 Figure 1.
Referring to Figs. 1, 2, 3 and 4 a device for assembling fabric layers, indicated by the numeral 38, comprises two principal elements formed by two parallel plates 45 and 46 connected to each other by two connecting 15 members 47.
Each connecting member comprises a bushing 48 in which a column 49, provided with a foot 50 and a head 51, is mounted, free to slide. The bushing 48 is fixed to the plate 45, while the foot 50 is fixed to the plate 46. The 20 connecting members 47 permit a relative approach and removal movement of the two plates 45 and 46 maintaining the parallelism between them. Around each bushing 48, between the two plates 45 and 46, a helicoidal spring is mounted, which acts at one side on a surface of the plate 25 45 and at the other side on the foot 50 so as to maintain the two plates 45 and 46 elastically spaced. The heads 51 are ~nd-stroke elements and maintain the two plates 45 and 46 in a determinate position of greatest reciprocal distance against the action of the spring 52.
On the plate 45 a plurality of needles 53 is fixed and, corresponding to said needles 53, on the plate 46 an equal number of holes 54 is made, through which the needles pass in pre-determined reciprocal positions of the two plates 45 and 46. On a folded edge of the plate 45 there 35 is mounted a bracket element 55 to which a hook 57 is pivoted at 56. The hook 57 is L-shaped and one of its arms 58 presents at its end a locking tooth 59, while the other arm 60 presents at its end a counterweight 61. On a folded edge of the plate 46 there is fixed a L-shaped referement element 62 which presents a notch 63 into which the locking tooth S9 is designed to fit.
The assembling device 38 comprises a rod 43 which permits its connection to a driving unit, not illustrated, and which is rotating around its longitudinal axis Z-Z.
To rotate the assembling device 38 around the Z-2 axis, the rod 43 ends in a anchorage foot 64 which couples, free to rotate, with a hollow element 65 fixed to the plate 45. An electric motor 66 is mounted on the foot 64 and transmits rotational motion to a screw 67 via a toothed belt 68 and two toothed wheels, one of them a driving wheel fixed to the motor shaft, the other, a driven wheel fixed to the screw 67. The screw 67 is mounted, free to rotate, on two abutments 70 fixed to the foot 64. On the screw 67 there is mounted a block 71 to which a nut is attached, coupling with the screw 67. The block 71 is provided with a tongue 9 which is placed, free to slide, in a slot 73 of an element 74 fixed to the foot 64. A
free end of a flexible blade 76 is fixed to an extension 75 of the block 71. The other end of the flexible blade 76 is fixed to the hollow element 65. In this way, one rotation of the screw 67, operated by the motor 66, corresponds to a displacement of the block 71 along the axis of the same screw, displacement which is guided by the slot 73. In turn the block 71 rotates the hollow element 65 through the blade 76. The fact that the junction 77 of the blade 76 to the extension 75 of the block 71 moves with rectilinear motion and the junction 78 of the blade 76 to the hollow element 65 moves with circular motion is compensated by the flexibility of the same blade which will bend more or less according to the position of the junction 77 with respect to the rotation center of the junction 78. By an appropriate supply of the electric motor 66 it is possible to cause the rotation 1 3~6~2 of the hollow element 65 relative to the anchorage foot 64, that is to cause the rotation of the whole assembling device 38 around the Z-Z axis, along which the rod 43 in place, in one or in the other of the two rotation ways, is indicated by the arrow F in Figure 1.
An angular position sensor of a known type, connected to the screw 67, is also fixed to the foot 64. Moreover there are provided two stroke-ends which stop the rotation of the assembling device 38 in two respective angular positions of this relative to the Z-Z axis, that is they limit the angular excursion of the assembly device 38, one stroke-end relative to one rotation way, the other relative to the other rotation way.
One of the two stroke-ends is~formed by a microswitch 80, fixed to the foot 64, which is controlled by a blade 81, fixed to the block 71, which acts on a small rod 82 of the microswitch 80 controlling the mobile contact of the same microswitch, which gives the command to stop the stroke.
The other stroke-end is formed by an electronic switch comprising a magnet 83, mounted on extension 84 of the anchorage foot 64, and a transistoric circuit 85 mounted on an extension 86 of the hollow element 65 in correspondence with the magnet 83. When the circuit 85 is aligned with the magnet 83, this determines a communication in the same circuit which gives the command to stop the stroke.
In Figs. 5, 6, 7 and 8 the method of operating the assembly device 38 is shown with particular reference to the utilization of this device to assemble three fabric layers resting, in a separated position one from another, on a support plane 32. In Figure 5, as well as in Figure 1 there is partially illustrated an arm 37, formed by two half-arms 37A and 37B, of the above cited driving unit which supports the assembling device 38.
The assembling device 38 is in raised position with respect to the support plane 32. The driving unit moves 131~2 the arm 37 to carry the assembling device 38 to a correct position above the lower fabric layer 20 (Fig. 5); then, acting on the ~od 43, controls the descent of the assembling device 38 towards the support plane 32.
Before the assembling device 38 is lowered by the driving unit to assemble the first fabric layer 20, it is in the configu- ration of Figure 6, in which the two plates 45 and 46 are elastically held by the spring 52 in a position in which the needles 53 are completely inside the space delimited by the same plates and in whicn the tooth 59 of the hook 57 is held by the counterweight 61 against a wall 106 of the element 62. When the lower plate 46 enters into contact with the support plane 32 and with the first fabric layer 20, the further descent of the assembling device 38 causes the approach of the plate 45 to the plate 46 against the action of the spring 52 and, as a consequence, causes the partial passage of the needles 53 through the corresponding holes 54. In this way the needles transfix the fabric layer 20 partially entering into the support plane 32, as shown in Figure 2.
Subsequently the driving unit controls the raising of the assembling device 38 via the rod 43. During the raising, the action of the spring 52 tends to move the two plates 45 and 46 apart. Yet the tooth 59 of the hook 57 fits into the cavity 63 of the element 62, that is, the hook 57 clasps the element 62 fastening the two plates 45 and 46 in an approached position in which the needles jut out of the corresponding holes 54 keeping the fabric layer 20 transfixed, which is so raised with the assembling device 38, as shown in Figure 7.
In the following phase, the assembling device 38 is carried in the correct position above the central fabric layer 20 and is lowered and raised so that the needles 53 transfix and carry with them the second fabric layer. The hook 57 is always held by the counterweight 61 in locking position maintain the needles in the jutting out position.
The following phase describes the assembly of the third superior fabric layer 20, which occurs in a manner identical to that explained in the previous phase. The three fabric layers 20 result in this way transfixed by the needles 53 and laid one upon the other.
The support plane 32 provides a fibrous superior thickness 110, shown only in Figure 2, which permits a partial penetration of the needles 53 into the same plane during the assembling of the fabric layers 20 without creating friction forces which could obstruct the raising of the assembling device 38. At this moment the driving unit moves the assembling device 38 with the three laid upon fabric layers 20 transfixed by the needles 53, to carry it on a support base 87 to discharge the three laid upon fabric layers 20 on the same base. This support base may, for example, be part of a sewing unit where the three laid upon fabric layers 20 are sewn together. When the assembling device is in its correct position on the support base 87, the unlocking of the hook 57 of the element 62 is operated. That causes, as a result of the action of the spring 52, a sudden removal of the plate 46 from the plate 4~ to the greatest removal position so that the inferior plate 46 slips off the three laid upon fabric layers 20 from the needles 53 and pushes them towards the support base 87, where such fabric layers are stored, as shown in Figure 8. In said figure the unlocking movement of the hook 57 is schematized with an arrow "Hn. The assembling device returns in this way to the position shown in Fig. 6.
To unlock the hook 57, unlocking means associated with the same hook may be used. For example it may be a small hammer, mounted on the support base, schematically indicated by the numeral 90 in Fig. 3, which is driven by a pneumatic or electromagnetic actuator in such a way as to strike against the hook ~7 to unlock it from the element 62.
~31~
It may even be a pneumatic or electromagnetic member directly mounted on the assembling device, as shown in Fig. 2, wnere this unlocking member, mounted on the plate 46, is illustrated in phantom lines and indicated by the numeral 8 and comprises an element 8A which operates as the small hammer.
Generally, the unlocking means may be of any type and may be mounted on the assembling device or on the structure which receives the three laid upon fabric layers.
The described and illustrated assembling device appears in its basic structure, that is, not considering the motor and the kinematic elements which permit its rotation around the Z-Z axis. It is very simply formed by a few elementary components. This results in very low production costs. Even the operating manner of this assembling device is very simple making the device very reliable.
Moreover it ma~ntains the fabric layers in a planar configuration during transport and discharge. It may, besides other functions, draw and layer a number of different fabric layers, as well as fabric layers of various form, size, thickness etc.
The members which permit the rotation of the assembling device around the Z-Z axis, permit a very fine rotational movement, due to the great reduction caused by the screw 67. This is important for setting the assembling device in the correct angular position above the fabric layer to be drawn. Often during the driving operation it is this angular regulation which is most important and often the known driving units are missing this angular regulation. It is especially necessary when the piece to be drawn has an oblong configuration. It is clear that variations and/or supplements may be provided to what has been described and illustrated.
For example the configuration of the plates, in respect to the form of the fabric layers, may be changed and even i 6 2 the type of connecting members may be changed.
As far as the rotation of the assembling device is concerned, this could be effected by directly rotating the same assembling device. That is to say, however, that the illustrated solution which comprises mounting a small electric motor and the corresponding kinematic elements on the assembling device for rotating the assembling device relative to one of its rods permitting its connection to the driving unit, relieves, as much as possible, the load supported by the driving unit.
Clearly, the kinematic elements above described and illustrated, which permit the electric motor to rotate the assembling device as regards to its connection rod, may be replaced by kinematic elements having equivalent functions.
The kinematic elements of the present invention however are particularly advantageous because they do not require an electric motor of any ~reat power to rotate the assembling head, due to the great reduction effected by the screw 67 and because, due to this reduction, permits fine regulation of the rotation of the assembling head. Instead of the counterweight 61, it is possible to use, to maintain the hook against the-corresponding element to which it couples, a spring schematically indicated in Fig. 2 in phantom lines by the numeral 7.
Such an assembling device, although particularly apt for assembling and layering fabric layers, may also assemble layers of other material which can be easily transfixed and slip off of the needles.
Claims (19)
1. A device for assembling fabric layers charac-terized in that it comprises two principal elements connected in such a way that they may freely move reciprocally between a removal position and an approach position, one of the principal elements solidly carrying a plurality of needles and the other having a plurality of holes corresponding to such needles, in the removal position said needles being gathered in a space included between said two principal elements, in the approach position said needles fitting into said holes and jutting out of them, locking means being provided which lock, in an unlockable way, said principal elements in said approach position, during the passage from said removal position to said approach position said needles jutting out gradually from the corresponding holes to transfix said fabric layers, while during the passage from said approach position to said removal position the principal element provided with the holes slipping the fabric layers off of said needles.
2. A device according to claim 1, wherein elastic members are interposed between said principal elements, said members elastically maintaining said principal elements in said reciprocal removal position.
3. A device according to claim 1, wherein said two principal elements of said device are connected through a stem-bushing coupling which permits said reciprocal mobility between the two principal elements.
4. A device according to claim 1, 2 or 3, wherein said two principal elements are disposed parallel to each other and move reciprocally maintaining said parallelism.
5. A device according to claim 1, wherein said locking means comprises a hook connected to one of said two principal elements and a referement element connected to the other of said principal elements, said hook being movable between an unlocking position when said principal elements are in reciprocal removal position and a locking position when said principal elements are in reciprocal approach position.
6. A device according to claim 5, wherein there are provided means acting on said hook for locking it with said referement element in the reciprocal approach position of the two principal elements carrying the hook in the locking position.
7. A device according to claim 6, wherein said means acting on said hook comprises a counterweight.
8. A device according to claim 6, wherein said means acting on said hook comprises an elastic member.
9. A device according to claim 5, 6 or 7, wherein said hook is pivoted at the corresponding principal element for oscillating between the unlocking position and the locking position.
10. A device according to claim 1, 2 or 3, comprising unlocking means for said locking means.
11. A device according to claim 1, comprising connecting means to a driving unit.
12. A device according to claim 11, comprising means for the relative rotation of the principal elements of the assembly device with regard to the connecting means.
13. A device according to claim 12, wherein motor means are provided, fixed to said connecting means and connected to said principal elements through kinematic elements for permitting the rotation of said principal elements with regard to said connecting means.
14. A device according to claim 13, wherein said kinematic elements comprise a screw rotatably mounted on said connecting means and moreover a further element screw coupled with said screw to move with rectilinear motion as the screw rotates, said further element being connected via a flexible element to one of the two principal element of the assembling device.
15. A device according to claim 14, wherein an angular position sensor is provided, mounted on said connecting means and rotatably connected to said screw.
16. A device according to claim 12, 13 or 14, comprising end-stroke members for delimiting the angular rotation of the two principal elements.
17. A device according to claim 1, 2 or 3, wherein each of said principal elements of the assembling device is formed by a plate.
18. A device according to claim 1, 2 or 3, wherein said locking means are joined with unlocking means disposed on a structure outside the same assembling device.
19. A device according to claim 1, 2 or 3, joined with an assembling plane on which the fabric layers are posed, said assembling plane presenting a fibrous support thickness.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT8842906A IT1234569B (en) | 1988-06-07 | 1988-06-07 | DEVICE FOR COLLECTION OF LAYERS OF FABRIC, INTENDED IN PARTICULAR TO MACHINES FOR THE PACKAGING INDUSTRY. |
| IT42906A/88 | 1988-06-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1315562C true CA1315562C (en) | 1993-04-06 |
Family
ID=11254580
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000601462A Expired - Fee Related CA1315562C (en) | 1988-06-07 | 1989-06-01 | Device for assembling fabric layers, particularly designed for manufacturing industry machines |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US4905616A (en) |
| EP (1) | EP0345865A3 (en) |
| JP (1) | JPH0233309A (en) |
| CA (1) | CA1315562C (en) |
| DK (1) | DK214189A (en) |
| IT (1) | IT1234569B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2003902038A0 (en) * | 2003-04-28 | 2003-05-15 | Mars, Incorporated | Device and method for engaging penetrable items |
| JP4407803B2 (en) | 2004-03-08 | 2010-02-03 | ブラザー工業株式会社 | Image recording device |
| CN107457943B (en) * | 2016-06-02 | 2023-05-30 | 宁波胶点密封工业有限公司 | Feeding assembly line and flat vulcanizing machine thereof |
| FI3822049T3 (en) * | 2019-11-13 | 2023-07-18 | Open Mind Ventures S L U | System for picking-up elements |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1092068A (en) * | 1913-05-28 | 1914-03-31 | Addie L Mcdonald | Means for automatically inflating pneumatic tires. |
| US1215677A (en) * | 1916-06-17 | 1917-02-13 | George E Marlatt | Pig-feeding apparatus for linotype-machines. |
| NL242368A (en) * | 1958-09-19 | |||
| NL274671A (en) * | 1961-02-15 | |||
| US4214741A (en) * | 1979-06-04 | 1980-07-29 | Cluett, Peabody & Co., Inc. | Needle pickup device |
| CA1147764A (en) * | 1980-04-02 | 1983-06-07 | Nabil Kamal | Offset overlapped needles system for material positioning |
| US4435837A (en) * | 1981-03-05 | 1984-03-06 | President And Fellows Of Harvard College | Pattern recognition and orientation system |
| DE8109780U1 (en) * | 1981-04-01 | 1981-10-29 | Kochs Adler Ag, 4800 Bielefeld | "TEMPLATE FOR A SEWING MACHINE FOR AUTOMATIC TAPPING OF A WORKPIECE USED" |
| US4485754A (en) * | 1982-09-30 | 1984-12-04 | Compo Industries, Inc. | Automatic loader for sewing machines |
| GB8301542D0 (en) * | 1983-01-20 | 1983-02-23 | British United Shoe Machinery | Positioning two workpiece portions for stitching together |
| EP0197932A1 (en) * | 1983-11-29 | 1986-10-22 | WONG, Paul Charles | A cloth pick up device |
| US4688837A (en) * | 1985-12-11 | 1987-08-25 | Fieldcrest Cannon, Inc. | Robot end effector mechanism for gripping and holding a flat textile article in a predetermined orientation |
-
1988
- 1988-06-07 IT IT8842906A patent/IT1234569B/en active
-
1989
- 1989-03-30 US US07/330,786 patent/US4905616A/en not_active Expired - Fee Related
- 1989-05-02 DK DK214189A patent/DK214189A/en not_active Application Discontinuation
- 1989-05-29 EP EP19890201368 patent/EP0345865A3/en not_active Withdrawn
- 1989-06-01 CA CA000601462A patent/CA1315562C/en not_active Expired - Fee Related
- 1989-06-07 JP JP1143169A patent/JPH0233309A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| US4905616A (en) | 1990-03-06 |
| IT1234569B (en) | 1992-05-20 |
| IT8842906A0 (en) | 1988-06-07 |
| EP0345865A2 (en) | 1989-12-13 |
| JPH0233309A (en) | 1990-02-02 |
| DK214189A (en) | 1989-12-08 |
| EP0345865A3 (en) | 1991-07-03 |
| DK214189D0 (en) | 1989-05-02 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKLA | Lapsed |